Download or read book Recent Results on Jet Physics and Tests of QCD Quantum Chromodynamics in E Sup E Sup Minus Annihilation written by and published by . This book was released on 1989 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental investigations to test specific predictions of Quantum Chromodynamics and to adjust the free parameters of the theory are reviewed. Determinations of the strong coupling constant,?{sub s}, in?-decays and in the continuum of ee− annihilations are summarized and discussed. Studies on production rates of multijet hadronic final states in the center of mass energy range of 22 GeV to 93 GeV, including optimizations of both the scale parameter?{sub {ovr MS}} and the renormalization scale?2 in O(?{sub s}2) perturbative QCD, are presented. The status of experimental tests of the nonabelian nature of QCD is summarized. 48 refs., 9 figs., 4 tabs.

Download or read book Precise Tests of QCD in E sup e sup minus Annihilation written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A pedagogical review is given of precise tests of QCD in electron-positron annihilation. Emphasis is placed on measurements that have served to establish QCD as the correct theory of strong interactions, as well as measurements of the coupling parameter[alpha][sub s]. An outlook is given for future important tests at a high-energy e[sup+]e[sup[minus]] collider.

Download or read book Energy Research Abstracts written by and published by . This book was released on 1990 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tests of Quantum Chromodynamics in Exclusive E Sup E Sup Minus And Gamma Gamma Processes written by and published by . This book was released on 1989 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper discusses the following topics: Factorization theorem for exclusive processes; Electromagnetic form factors of baryons; Suppression of final state interactions; The??0 Transition form factor; Exclusive charmonium decays; The?-? puzzle; Time-like compton processes; Multi-hadron production; Heavy Quark exclusive states and form factor zeros in QCD; Exclusive?? reactions; Higher twist effects; and Tauonium and threshold??− production. 41 refs., 15 figs. (LSP).

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1995-11 with total page 1544 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Direct Tests of Quantum Chromodynamics in High Energy E e Annihilation at PETRA written by James Edward Freeman and published by . This book was released on 1981 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Experimental Study of QCD and Jets in Esup esup Minus Annihilation written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Unusual Initial and Final State Effects in Quantum Chromodynamics written by and published by . This book was released on 1992 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: A number of fundamental tests were constructed which can be used to probe discrete symmetries, and their possible violations, in the required new physics'' beyond the standard model. On-going experiments with unpolarized e[sup [minus]] e[sup +], collisions contain many events for the production-decay sequence e[sup [minus]] e[sup +] [yields] Z[degree], [gamma]* [yields] [tau][sup [minus]] [tau][sup +] [yields] (A[sup [minus]]X)(B[sup +] X). By inclusion of [rho] polarimetry observable such experiments enable two distinct tests for leptonic CP violation in [tau] [yields] [rho][nu] decay by generalization of the energy correlation function for Z[degrees], or [gamma]* [yields] [tau][sup [minus]] [tau][sup +] [yields] ([rho][sup [minus]][nu]) ([rho][sup +][bar [nu]]). Other research programs are (i) continuing to investigate the proposal that partons be identified with nearly degenerate, coherent quark-gluon jet'' states, and are (ii) investigating the novel consequences of q-analogue quantization of quantum fields, and of a completeness relation for the q-analogue coherent states.

Download or read book Government Reports Annual Index written by and published by . This book was released on 1991 with total page 1332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ERDA Energy Research Abstracts written by and published by . This book was released on 1989 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book INIS Atomindex written by and published by . This book was released on 1988 with total page 1308 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Results On alpha sub S and Tests of QCD From and Above the Z sup 0 written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of[alpha][sub s] from e[sup+]e[sup -] annihilation experiments are reviewed and compared with measurements from other processes. Highlights are presented of recent QCD studies in e[sup+]e[sup -] annihilation at the Z[sup 0] resonance.

Download or read book Color Confinement and Hadrons in Quantum Chromodynamics Proceedings of the International Conference written by and published by World Scientific. This book was released on 2004 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book makes a global survey of nonperturbative aspects of quantum chromodynamics (QCD) from the viewpoints of mathematical, elementary-particle and hadron physics, including recent lattice-QCD results. It presents current, important progress in the following areas: the quark confinement mechanism, dynamical chiral-symmetry breaking, topologies in QCD (instantons, monopoles, vortices), SUSY QCD, nonperturbative methods (1/Nc, ladder QCD, AdS/CFT), QCD phase transition at finite temperature and density, quark-gluon plasma, and so on. For recent topics, the book also includes the experimental.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Color Confinement And Hadrons In Quantum Chromodynamics Proceedings Of The International Conference written by Hideo Suganuma and published by World Scientific. This book was released on 2004-05-07 with total page 551 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book makes a global survey of nonperturbative aspects of quantum chromodynamics (QCD) from the viewpoints of mathematical, elementary-particle and hadron physics, including recent lattice-QCD results. It presents current, important progress in the following areas: the quark confinement mechanism, dynamical chiral-symmetry breaking, topologies in QCD (instantons, monopoles, vortices), SUSY QCD, nonperturbative methods (1/Nc, ladder QCD, AdS/CFT), QCD phase transition at finite temperature and density, quark-gluon plasma, and so on. For recent topics, the book also includes the experimental discovery of the penta-quark particle, the newest information on the QGP creation experiments, and theoretical progress on the baryonic three-quark potential and the high-density QCD.The proceedings have been selected for coverage in:• Index to Scientific & Technical Proceedings® (ISTP® / ISI Proceedings)• Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)• CC Proceedings — Engineering & Physical Sciences

Download or read book Physics Briefs written by and published by . This book was released on 1989 with total page 1272 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book QCD Radiation in Top Antitop and Z Jets Final States written by Kiran Joshi and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis contains new research in both experimental and theoretical particle physics, making important contributions in each. Two analyses of collision data from the ATLAS experiment at the LHC are presented, as well as two phenomenological studies of heavy coloured resonances that could be produced at the LHC. The first data analysis was the measurement of top quark-antiquark production with a veto on additional jet activity. As the first detector-corrected measurement of jet activity in top-antitop events it played an important role in constraining the theoretical modelling, and ultimately reduced these uncertainties for ATLAS's other top-quark measurements by a factor of two. The second data analysis was the measurement of Z+2jet production and the observation of the electroweak vector boson fusion (VBF) component. As the first observation of VBF at a hadron collider, this measurement demonstrated new techniques to reliably extract VBF processes and paved the way for future VBF Higgs measurements. The first phenomenological study developed a new technique for identifying the colour of heavy resonances produced in proton-proton collisions. As a by-product of this study an unexpected and previously unnoticed correlation was discovered between the probability of correctly identifying a high-energy top and the colour structure of the event it was produced in. The second phenomenological study explored this relationship in more detail, and could have important consequences for the identification of new particles that decay to top quarks.